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Algebraic and Enumerative combinatorics seminar - Tyler Dunaisky-Cosmological Correlators and Triangulating the Dual Cosmological Polytope
2026-04-16 14:30 - 15:30 (America/Toronto)
SPEAKER:

Tyler Dunaisky

AFFILIATION:
Purdue University

LOCATION:
MC 5417

ABSTRACT: A cosmological correlator is an Euler integral, associated
to a graph G, which encodes information about the state of the early
universe. Evaluation of these integrals is extremely challenging, even
in simple cases. However, it turns out the integrand can be identified
with the so-called canonical form of the cosmological polytope,
revealing a rich combinatorial structure and allowing the application
of techniques from commutative algebra. I'll sketch my contribution to
this story and advertise the fledgling field of positive geometry,
which seeks to generalize the notion of canonical forms to geometric
objects more exotic than polytopes.

THERE WILL BE A PRE-SEMINAR PRESENTING RELEVANT BACKGROUND AT THE
BEGINNING GRADUATE LEVEL STARTING AT 1:30PM.
